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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: SizeEstimator.html 939 2015-05-29 01:16:17Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.util;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.ArrayList;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.TreeMap;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.TreeSet;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>/**<a name="line.14"></a>
<span class="sourceLineNo">015</span> * Used to estimate Java object memory usage in bytes.<a name="line.15"></a>
<span class="sourceLineNo">016</span> *<a name="line.16"></a>
<span class="sourceLineNo">017</span> * &lt;p&gt;<a name="line.17"></a>
<span class="sourceLineNo">018</span> * For classes that contain references to other objects, what exactly is included in an object's "size"<a name="line.18"></a>
<span class="sourceLineNo">019</span> * is defined on a case-by-case basis.<a name="line.19"></a>
<span class="sourceLineNo">020</span> */<a name="line.20"></a>
<span class="sourceLineNo">021</span>public class SizeEstimator {<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>    public static final int BOOLEAN_SIZE = 1;<a name="line.23"></a>
<span class="sourceLineNo">024</span>    public static final int BYTE_SIZE = 1;<a name="line.24"></a>
<span class="sourceLineNo">025</span>    public static final int CHAR_SIZE = 2;<a name="line.25"></a>
<span class="sourceLineNo">026</span>    public static final int SHORT_SIZE = 2;<a name="line.26"></a>
<span class="sourceLineNo">027</span>    public static final int INT_SIZE = 4;<a name="line.27"></a>
<span class="sourceLineNo">028</span>    public static final int FLOAT_SIZE = 4;<a name="line.28"></a>
<span class="sourceLineNo">029</span>    public static final int LONG_SIZE = 8;<a name="line.29"></a>
<span class="sourceLineNo">030</span>    public static final int DOUBLE_SIZE = 8;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>    private long total;<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>    /**<a name="line.34"></a>
<span class="sourceLineNo">035</span>     * Get the estimated total size.<a name="line.35"></a>
<span class="sourceLineNo">036</span>     *<a name="line.36"></a>
<span class="sourceLineNo">037</span>     * @return current size estimate<a name="line.37"></a>
<span class="sourceLineNo">038</span>     */<a name="line.38"></a>
<span class="sourceLineNo">039</span>    public long getTotal() {<a name="line.39"></a>
<span class="sourceLineNo">040</span>        return this.total;<a name="line.40"></a>
<span class="sourceLineNo">041</span>    }<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span>// Basic stuff<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>    /**<a name="line.45"></a>
<span class="sourceLineNo">046</span>     * Get the basic overhead for any object.<a name="line.46"></a>
<span class="sourceLineNo">047</span>     *<a name="line.47"></a>
<span class="sourceLineNo">048</span>     * &lt;p&gt;<a name="line.48"></a>
<span class="sourceLineNo">049</span>     * The implementation in {@code SizeEstimator} returns 12.<a name="line.49"></a>
<span class="sourceLineNo">050</span>     *<a name="line.50"></a>
<span class="sourceLineNo">051</span>     * @return minimum size of any {@link Object}<a name="line.51"></a>
<span class="sourceLineNo">052</span>     */<a name="line.52"></a>
<span class="sourceLineNo">053</span>    public int getObjectOverhead() {<a name="line.53"></a>
<span class="sourceLineNo">054</span>        return 12;<a name="line.54"></a>
<span class="sourceLineNo">055</span>    }<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span>    /**<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * Get the size of an object reference.<a name="line.58"></a>
<span class="sourceLineNo">059</span>     *<a name="line.59"></a>
<span class="sourceLineNo">060</span>     * &lt;p&gt;<a name="line.60"></a>
<span class="sourceLineNo">061</span>     * The implementation in {@code SizeEstimator} returns 4.<a name="line.61"></a>
<span class="sourceLineNo">062</span>     *<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * @return the size of an object reference<a name="line.63"></a>
<span class="sourceLineNo">064</span>     */<a name="line.64"></a>
<span class="sourceLineNo">065</span>    public int getReferenceSize() {<a name="line.65"></a>
<span class="sourceLineNo">066</span>        return 4;<a name="line.66"></a>
<span class="sourceLineNo">067</span>    }<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>    /**<a name="line.69"></a>
<span class="sourceLineNo">070</span>     * Add the basic overhead for any object.<a name="line.70"></a>
<span class="sourceLineNo">071</span>     *<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * &lt;p&gt;<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * The implementation in {@code SizeEstimator} adds the amount returned by {@link #getObjectOverhead}.<a name="line.73"></a>
<span class="sourceLineNo">074</span>     *<a name="line.74"></a>
<span class="sourceLineNo">075</span>     * @return this instance<a name="line.75"></a>
<span class="sourceLineNo">076</span>     */<a name="line.76"></a>
<span class="sourceLineNo">077</span>    public SizeEstimator addObjectOverhead() {<a name="line.77"></a>
<span class="sourceLineNo">078</span>        this.total += this.getObjectOverhead();<a name="line.78"></a>
<span class="sourceLineNo">079</span>        return this;<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    /**<a name="line.82"></a>
<span class="sourceLineNo">083</span>     * Adjust the total by an arbitrary amount.<a name="line.83"></a>
<span class="sourceLineNo">084</span>     *<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * @param value amount to add to the total<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * @return this instance<a name="line.86"></a>
<span class="sourceLineNo">087</span>     */<a name="line.87"></a>
<span class="sourceLineNo">088</span>    public SizeEstimator add(long value) {<a name="line.88"></a>
<span class="sourceLineNo">089</span>        this.total += value;<a name="line.89"></a>
<span class="sourceLineNo">090</span>        return this;<a name="line.90"></a>
<span class="sourceLineNo">091</span>    }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>// Primitives<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span>    /**<a name="line.95"></a>
<span class="sourceLineNo">096</span>     * Add the size of a primitive {@code boolean} field.<a name="line.96"></a>
<span class="sourceLineNo">097</span>     *<a name="line.97"></a>
<span class="sourceLineNo">098</span>     * @return this instance<a name="line.98"></a>
<span class="sourceLineNo">099</span>     */<a name="line.99"></a>
<span class="sourceLineNo">100</span>    public final SizeEstimator addBooleanField() {<a name="line.100"></a>
<span class="sourceLineNo">101</span>        this.total += BOOLEAN_SIZE;<a name="line.101"></a>
<span class="sourceLineNo">102</span>        return this;<a name="line.102"></a>
<span class="sourceLineNo">103</span>    }<a name="line.103"></a>
<span class="sourceLineNo">104</span><a name="line.104"></a>
<span class="sourceLineNo">105</span>    /**<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * Add the size of a primitive {@code byte} field.<a name="line.106"></a>
<span class="sourceLineNo">107</span>     *<a name="line.107"></a>
<span class="sourceLineNo">108</span>     * @return this instance<a name="line.108"></a>
<span class="sourceLineNo">109</span>     */<a name="line.109"></a>
<span class="sourceLineNo">110</span>    public final SizeEstimator addByteField() {<a name="line.110"></a>
<span class="sourceLineNo">111</span>        this.total += BYTE_SIZE;<a name="line.111"></a>
<span class="sourceLineNo">112</span>        return this;<a name="line.112"></a>
<span class="sourceLineNo">113</span>    }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span>    /**<a name="line.115"></a>
<span class="sourceLineNo">116</span>     * Add the size of a primitive {@code char} field.<a name="line.116"></a>
<span class="sourceLineNo">117</span>     *<a name="line.117"></a>
<span class="sourceLineNo">118</span>     * @return this instance<a name="line.118"></a>
<span class="sourceLineNo">119</span>     */<a name="line.119"></a>
<span class="sourceLineNo">120</span>    public final SizeEstimator addCharField() {<a name="line.120"></a>
<span class="sourceLineNo">121</span>        this.total += CHAR_SIZE;<a name="line.121"></a>
<span class="sourceLineNo">122</span>        return this;<a name="line.122"></a>
<span class="sourceLineNo">123</span>    }<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span>    /**<a name="line.125"></a>
<span class="sourceLineNo">126</span>     * Add the size of a primitive {@code short} field.<a name="line.126"></a>
<span class="sourceLineNo">127</span>     *<a name="line.127"></a>
<span class="sourceLineNo">128</span>     * @return this instance<a name="line.128"></a>
<span class="sourceLineNo">129</span>     */<a name="line.129"></a>
<span class="sourceLineNo">130</span>    public final SizeEstimator addShortField() {<a name="line.130"></a>
<span class="sourceLineNo">131</span>        this.total += SHORT_SIZE;<a name="line.131"></a>
<span class="sourceLineNo">132</span>        return this;<a name="line.132"></a>
<span class="sourceLineNo">133</span>    }<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span>    /**<a name="line.135"></a>
<span class="sourceLineNo">136</span>     * Add the size of a primitive {@code int} field.<a name="line.136"></a>
<span class="sourceLineNo">137</span>     *<a name="line.137"></a>
<span class="sourceLineNo">138</span>     * @return this instance<a name="line.138"></a>
<span class="sourceLineNo">139</span>     */<a name="line.139"></a>
<span class="sourceLineNo">140</span>    public final SizeEstimator addIntField() {<a name="line.140"></a>
<span class="sourceLineNo">141</span>        this.total += INT_SIZE;<a name="line.141"></a>
<span class="sourceLineNo">142</span>        return this;<a name="line.142"></a>
<span class="sourceLineNo">143</span>    }<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span>    /**<a name="line.145"></a>
<span class="sourceLineNo">146</span>     * Add the size of a primitive {@code float} field.<a name="line.146"></a>
<span class="sourceLineNo">147</span>     *<a name="line.147"></a>
<span class="sourceLineNo">148</span>     * @return this instance<a name="line.148"></a>
<span class="sourceLineNo">149</span>     */<a name="line.149"></a>
<span class="sourceLineNo">150</span>    public final SizeEstimator addFloatField() {<a name="line.150"></a>
<span class="sourceLineNo">151</span>        this.total += FLOAT_SIZE;<a name="line.151"></a>
<span class="sourceLineNo">152</span>        return this;<a name="line.152"></a>
<span class="sourceLineNo">153</span>    }<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>    /**<a name="line.155"></a>
<span class="sourceLineNo">156</span>     * Add the size of a primitive {@code long} field.<a name="line.156"></a>
<span class="sourceLineNo">157</span>     *<a name="line.157"></a>
<span class="sourceLineNo">158</span>     * @return this instance<a name="line.158"></a>
<span class="sourceLineNo">159</span>     */<a name="line.159"></a>
<span class="sourceLineNo">160</span>    public final SizeEstimator addLongField() {<a name="line.160"></a>
<span class="sourceLineNo">161</span>        this.total += LONG_SIZE;<a name="line.161"></a>
<span class="sourceLineNo">162</span>        return this;<a name="line.162"></a>
<span class="sourceLineNo">163</span>    }<a name="line.163"></a>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span>    /**<a name="line.165"></a>
<span class="sourceLineNo">166</span>     * Add the size of a primitive {@code double} field.<a name="line.166"></a>
<span class="sourceLineNo">167</span>     *<a name="line.167"></a>
<span class="sourceLineNo">168</span>     * @return this instance<a name="line.168"></a>
<span class="sourceLineNo">169</span>     */<a name="line.169"></a>
<span class="sourceLineNo">170</span>    public final SizeEstimator addDoubleField() {<a name="line.170"></a>
<span class="sourceLineNo">171</span>        this.total += DOUBLE_SIZE;<a name="line.171"></a>
<span class="sourceLineNo">172</span>        return this;<a name="line.172"></a>
<span class="sourceLineNo">173</span>    }<a name="line.173"></a>
<span class="sourceLineNo">174</span><a name="line.174"></a>
<span class="sourceLineNo">175</span>    /**<a name="line.175"></a>
<span class="sourceLineNo">176</span>     * Add the size of an object reference field.<a name="line.176"></a>
<span class="sourceLineNo">177</span>     *<a name="line.177"></a>
<span class="sourceLineNo">178</span>     * &lt;p&gt;<a name="line.178"></a>
<span class="sourceLineNo">179</span>     * This is for the field itself, not including any object it may reference if not null<a name="line.179"></a>
<span class="sourceLineNo">180</span>     *<a name="line.180"></a>
<span class="sourceLineNo">181</span>     * @return this instance<a name="line.181"></a>
<span class="sourceLineNo">182</span>     */<a name="line.182"></a>
<span class="sourceLineNo">183</span>    public final SizeEstimator addReferenceField() {<a name="line.183"></a>
<span class="sourceLineNo">184</span>        this.total += this.getReferenceSize();<a name="line.184"></a>
<span class="sourceLineNo">185</span>        return this;<a name="line.185"></a>
<span class="sourceLineNo">186</span>    }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span>// Arrays<a name="line.188"></a>
<span class="sourceLineNo">189</span><a name="line.189"></a>
<span class="sourceLineNo">190</span>    /**<a name="line.190"></a>
<span class="sourceLineNo">191</span>     * Add the size of a non-null array having elements with the given size and the specified length.<a name="line.191"></a>
<span class="sourceLineNo">192</span>     *<a name="line.192"></a>
<span class="sourceLineNo">193</span>     * @param elementSize size of one array element<a name="line.193"></a>
<span class="sourceLineNo">194</span>     * @param length array length<a name="line.194"></a>
<span class="sourceLineNo">195</span>     * @return this instance<a name="line.195"></a>
<span class="sourceLineNo">196</span>     * @throws IllegalArgumentException if {@code elementSize} is non-positive or {@code length} is negative<a name="line.196"></a>
<span class="sourceLineNo">197</span>     */<a name="line.197"></a>
<span class="sourceLineNo">198</span>    public SizeEstimator addArray(int elementSize, int length) {<a name="line.198"></a>
<span class="sourceLineNo">199</span>        if (elementSize &lt;= 0)<a name="line.199"></a>
<span class="sourceLineNo">200</span>            throw new IllegalArgumentException("elementSize &lt;= 0");<a name="line.200"></a>
<span class="sourceLineNo">201</span>        if (length &lt; 0)<a name="line.201"></a>
<span class="sourceLineNo">202</span>            throw new IllegalArgumentException("length &lt; 0");<a name="line.202"></a>
<span class="sourceLineNo">203</span>        this.total +=<a name="line.203"></a>
<span class="sourceLineNo">204</span>            this.getObjectOverhead()                                // for the array object<a name="line.204"></a>
<span class="sourceLineNo">205</span>          + INT_SIZE                                                // for the array object's implicit length field<a name="line.205"></a>
<span class="sourceLineNo">206</span>          + length * elementSize;                                   // for the array elements<a name="line.206"></a>
<span class="sourceLineNo">207</span>        return this;<a name="line.207"></a>
<span class="sourceLineNo">208</span>    }<a name="line.208"></a>
<span class="sourceLineNo">209</span><a name="line.209"></a>
<span class="sourceLineNo">210</span>    /**<a name="line.210"></a>
<span class="sourceLineNo">211</span>     * Add the size of the given array object.<a name="line.211"></a>
<span class="sourceLineNo">212</span>     *<a name="line.212"></a>
<span class="sourceLineNo">213</span>     * @param array array object<a name="line.213"></a>
<span class="sourceLineNo">214</span>     * @return this instance<a name="line.214"></a>
<span class="sourceLineNo">215</span>     * @throws NullPointerException if {@code array} is null<a name="line.215"></a>
<span class="sourceLineNo">216</span>     */<a name="line.216"></a>
<span class="sourceLineNo">217</span>    public SizeEstimator add(boolean[] array) {<a name="line.217"></a>
<span class="sourceLineNo">218</span>        return this.addArray(BOOLEAN_SIZE, array.length);<a name="line.218"></a>
<span class="sourceLineNo">219</span>    }<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>    /**<a name="line.221"></a>
<span class="sourceLineNo">222</span>     * Add the size of the given array object.<a name="line.222"></a>
<span class="sourceLineNo">223</span>     *<a name="line.223"></a>
<span class="sourceLineNo">224</span>     * @param array array object<a name="line.224"></a>
<span class="sourceLineNo">225</span>     * @return this instance<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * @throws NullPointerException if {@code array} is null<a name="line.226"></a>
<span class="sourceLineNo">227</span>     */<a name="line.227"></a>
<span class="sourceLineNo">228</span>    public SizeEstimator add(byte[] array) {<a name="line.228"></a>
<span class="sourceLineNo">229</span>        return this.addArray(BYTE_SIZE, array.length);<a name="line.229"></a>
<span class="sourceLineNo">230</span>    }<a name="line.230"></a>
<span class="sourceLineNo">231</span><a name="line.231"></a>
<span class="sourceLineNo">232</span>    /**<a name="line.232"></a>
<span class="sourceLineNo">233</span>     * Add the size of the given array object.<a name="line.233"></a>
<span class="sourceLineNo">234</span>     *<a name="line.234"></a>
<span class="sourceLineNo">235</span>     * @param array array object<a name="line.235"></a>
<span class="sourceLineNo">236</span>     * @return this instance<a name="line.236"></a>
<span class="sourceLineNo">237</span>     * @throws NullPointerException if {@code array} is null<a name="line.237"></a>
<span class="sourceLineNo">238</span>     */<a name="line.238"></a>
<span class="sourceLineNo">239</span>    public SizeEstimator add(char[] array) {<a name="line.239"></a>
<span class="sourceLineNo">240</span>        return this.addArray(CHAR_SIZE, array.length);<a name="line.240"></a>
<span class="sourceLineNo">241</span>    }<a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
<span class="sourceLineNo">243</span>    /**<a name="line.243"></a>
<span class="sourceLineNo">244</span>     * Add the size of the given array object.<a name="line.244"></a>
<span class="sourceLineNo">245</span>     *<a name="line.245"></a>
<span class="sourceLineNo">246</span>     * @param array array object<a name="line.246"></a>
<span class="sourceLineNo">247</span>     * @return this instance<a name="line.247"></a>
<span class="sourceLineNo">248</span>     * @throws NullPointerException if {@code array} is null<a name="line.248"></a>
<span class="sourceLineNo">249</span>     */<a name="line.249"></a>
<span class="sourceLineNo">250</span>    public SizeEstimator add(short[] array) {<a name="line.250"></a>
<span class="sourceLineNo">251</span>        return this.addArray(SHORT_SIZE, array.length);<a name="line.251"></a>
<span class="sourceLineNo">252</span>    }<a name="line.252"></a>
<span class="sourceLineNo">253</span><a name="line.253"></a>
<span class="sourceLineNo">254</span>    /**<a name="line.254"></a>
<span class="sourceLineNo">255</span>     * Add the size of the given array object.<a name="line.255"></a>
<span class="sourceLineNo">256</span>     *<a name="line.256"></a>
<span class="sourceLineNo">257</span>     * @param array array object<a name="line.257"></a>
<span class="sourceLineNo">258</span>     * @return this instance<a name="line.258"></a>
<span class="sourceLineNo">259</span>     * @throws NullPointerException if {@code array} is null<a name="line.259"></a>
<span class="sourceLineNo">260</span>     */<a name="line.260"></a>
<span class="sourceLineNo">261</span>    public SizeEstimator add(int[] array) {<a name="line.261"></a>
<span class="sourceLineNo">262</span>        return this.addArray(INT_SIZE, array.length);<a name="line.262"></a>
<span class="sourceLineNo">263</span>    }<a name="line.263"></a>
<span class="sourceLineNo">264</span><a name="line.264"></a>
<span class="sourceLineNo">265</span>    /**<a name="line.265"></a>
<span class="sourceLineNo">266</span>     * Add the size of the given array object.<a name="line.266"></a>
<span class="sourceLineNo">267</span>     *<a name="line.267"></a>
<span class="sourceLineNo">268</span>     * @param array array object<a name="line.268"></a>
<span class="sourceLineNo">269</span>     * @return this instance<a name="line.269"></a>
<span class="sourceLineNo">270</span>     * @throws NullPointerException if {@code array} is null<a name="line.270"></a>
<span class="sourceLineNo">271</span>     */<a name="line.271"></a>
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<span class="sourceLineNo">344</span>     *<a name="line.344"></a>
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<span class="sourceLineNo">374</span>     *<a name="line.374"></a>
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<span class="sourceLineNo">389</span>     *<a name="line.389"></a>
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<span class="sourceLineNo">404</span>     *<a name="line.404"></a>
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<span class="sourceLineNo">419</span>     *<a name="line.419"></a>
<span class="sourceLineNo">420</span>     * &lt;p&gt;<a name="line.420"></a>
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<span class="sourceLineNo">434</span>     *<a name="line.434"></a>
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<span class="sourceLineNo">448</span>// SizeEstimating<a name="line.448"></a>
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<span class="sourceLineNo">452</span>     *<a name="line.452"></a>
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<span class="sourceLineNo">465</span>    /**<a name="line.465"></a>
<span class="sourceLineNo">466</span>     * Add the size of a {@link SizeEstimating} reference field.<a name="line.466"></a>
<span class="sourceLineNo">467</span>     *<a name="line.467"></a>
<span class="sourceLineNo">468</span>     * &lt;p&gt;<a name="line.468"></a>
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<span class="sourceLineNo">471</span>     *<a name="line.471"></a>
<span class="sourceLineNo">472</span>     * @param field field to measure, possibly null<a name="line.472"></a>
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<span class="sourceLineNo">480</span><a name="line.480"></a>
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<span class="sourceLineNo">486</span>     * &lt;p&gt;<a name="line.486"></a>
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<span class="sourceLineNo">489</span>     * &lt;p&gt;<a name="line.489"></a>
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<span class="sourceLineNo">495</span>    public SizeEstimator addArrayListField(ArrayList&lt;?&gt; list) {<a name="line.495"></a>
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<span class="sourceLineNo">498</span>              .addReferenceField()                                      // elementData field<a name="line.498"></a>
<span class="sourceLineNo">499</span>              .addArray(this.getReferenceSize(), list.size())           // elementData array<a name="line.499"></a>
<span class="sourceLineNo">500</span>              .addIntField()                                            // modCount field<a name="line.500"></a>
<span class="sourceLineNo">501</span>              .addIntField();                                           // size field<a name="line.501"></a>
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<span class="sourceLineNo">508</span>     *<a name="line.508"></a>
<span class="sourceLineNo">509</span>     * &lt;p&gt;<a name="line.509"></a>
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<span class="sourceLineNo">511</span>     *<a name="line.511"></a>
<span class="sourceLineNo">512</span>     * &lt;p&gt;<a name="line.512"></a>
<span class="sourceLineNo">513</span>     * This does not include the sizes of the key and value objects contained in the {@link TreeMap}.<a name="line.513"></a>
<span class="sourceLineNo">514</span>     *<a name="line.514"></a>
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<span class="sourceLineNo">518</span>    public SizeEstimator addTreeMapField(TreeMap&lt;?, ?&gt; map) {<a name="line.518"></a>
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<span class="sourceLineNo">521</span>        return this.addReferenceField();<a name="line.521"></a>
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<span class="sourceLineNo">527</span>     * &lt;p&gt;<a name="line.527"></a>
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<span class="sourceLineNo">529</span>     *<a name="line.529"></a>
<span class="sourceLineNo">530</span>     * &lt;p&gt;<a name="line.530"></a>
<span class="sourceLineNo">531</span>     * This does not include the sizes of the objects contained in the {@link TreeSet}.<a name="line.531"></a>
<span class="sourceLineNo">532</span>     *<a name="line.532"></a>
<span class="sourceLineNo">533</span>     * @param set {@link TreeSet} object, possibly null<a name="line.533"></a>
<span class="sourceLineNo">534</span>     * @return this instance<a name="line.534"></a>
<span class="sourceLineNo">535</span>     */<a name="line.535"></a>
<span class="sourceLineNo">536</span>    public SizeEstimator addTreeSetField(TreeSet&lt;?&gt; set) {<a name="line.536"></a>
<span class="sourceLineNo">537</span>        if (set != null) {<a name="line.537"></a>
<span class="sourceLineNo">538</span>            this.total +=<a name="line.538"></a>
<span class="sourceLineNo">539</span>                this.getObjectOverhead()<a name="line.539"></a>
<span class="sourceLineNo">540</span>              + this.getReferenceSize()                             // for the TreeSet.m field<a name="line.540"></a>
<span class="sourceLineNo">541</span>              + this.getTreeMapSize(set.size());                    // for the TreeMap<a name="line.541"></a>
<span class="sourceLineNo">542</span>        }<a name="line.542"></a>
<span class="sourceLineNo">543</span>        return this.addReferenceField();<a name="line.543"></a>
<span class="sourceLineNo">544</span>    }<a name="line.544"></a>
<span class="sourceLineNo">545</span><a name="line.545"></a>
<span class="sourceLineNo">546</span>    private long getTreeMapSize(int count) {<a name="line.546"></a>
<span class="sourceLineNo">547</span><a name="line.547"></a>
<span class="sourceLineNo">548</span>        // Get the size of one Entry object<a name="line.548"></a>
<span class="sourceLineNo">549</span>        final int entrySize =<a name="line.549"></a>
<span class="sourceLineNo">550</span>            this.getObjectOverhead()<a name="line.550"></a>
<span class="sourceLineNo">551</span>          + this.getReferenceSize() * 5                             // parent, left, right, key, value<a name="line.551"></a>
<span class="sourceLineNo">552</span>          + BOOLEAN_SIZE;                                           // color<a name="line.552"></a>
<span class="sourceLineNo">553</span><a name="line.553"></a>
<span class="sourceLineNo">554</span>        // Add the size of the TreeMap itself, plus all Entry's<a name="line.554"></a>
<span class="sourceLineNo">555</span>        return this.getObjectOverhead()<a name="line.555"></a>
<span class="sourceLineNo">556</span>          + this.getReferenceSize() * 7                             // various reference fields<a name="line.556"></a>
<span class="sourceLineNo">557</span>          + INT_SIZE * 2                                            // size, modCount<a name="line.557"></a>
<span class="sourceLineNo">558</span>          + entrySize * count;                                      // all Entry's<a name="line.558"></a>
<span class="sourceLineNo">559</span>    }<a name="line.559"></a>
<span class="sourceLineNo">560</span>}<a name="line.560"></a>
<span class="sourceLineNo">561</span><a name="line.561"></a>




























































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